Home > Developer > Java

How to solve the problem of garbled JSP page display

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

I. garbled characters on the JSP page

The following JSP page (display. jsp) is garbled:

 
 
    
  
  
  1. <Html>
    2. 
  
  
  2. <Head>
    3. 
  
  
  3. <Title>JSP Chinese Processing</Title>
    4. 
  
  
  4. <Meta Http-equiv="Content-Type" Content="Text/html; charset = gb2312">
    5. 
  
  
  5. </Head>
    6. 
  
  
  6. <Body>
    7. 
  
  
  7. <%
    8. 
  
  
  8. Out. print ("JSP Chinese processing ");
    9. 
  
  
  9. %>
    10. 
  
  
  10. </Body>
    11. 
  
  
  11. </Html> 
    12.

Different WEB servers and JDK versions have different processing results. Cause: the encoding method used by the server is different from that used by the browser to display different characters. Solution: Specify the encoding method (gb2312) on the JSP page, that is, add the following code to the first line of the page:

 
 
    
  
  
  1. <%@ page contentType="text/html; charset=gb2312"%> 
    2.

The garbled characters can be eliminated. The complete page is as follows:

 
 
    
  
  
  1. <% @ PageContentType="Text/html; charset = gb2312"%>
    2. 
  
  
  2. <Html>
    3. 
  
  
  3. <Head>
    4. 
  
  
  4. <Title>JSP Chinese Processing</Title>
    5. 
  
  
  5. <Meta Http-equiv="Content-Type" Content="Text/html; charset = gb2312">
    6. 
  
  
  6. </Head>
    7. 
  
  
  7.  
    8. 
  
  
  8. <Body>
    9. 
  
  
  9. <%
    10. 
  
  
  10. Out. print ("JSP Chinese processing ");
    11. 
  
  
  11. %>
    12. 
  
  
  12. </Body>
    13. 
  
  
  13. </Html> 
    14.

2. garbled characters appear when the form is submitted to Chinese

The following is a submission page (submit. jsp). The Code is as follows:

 
 
    
  
  
  1. <Html>
    2. 
  
  
  2. <Head>
    3. 
  
  
  3. <Title>JSP Chinese Processing</Title>
    4. 
  
  
  4. <Meta Http-equiv="Content-Type" Content="Text/html; charset = gb2312">
    5. 
  
  
  5. </Head>
    6. 
  
  
  6. <Body>
    7. 
  
  
  7. <Form Name="Form1" Method="Post" Action="Process. jsp">
    8. 
  
  
  8. <Div Align="Center">
    9. 
  
  
  9. <Input Type="Text" Name="Name">
    10. 
  
  
  10. <Input Type="Submit" Name="Submit" Value="Submit">
    11. 
  
  
  11. </Div>
    12. 
  
  
  12. </Form>
    13. 
  
  
  13. </Body>
    14. 
  
  
  14. </Html> 
    15.

The following is the process. jsp code:

 
 
    
  
  
  1. <% @ PageContentType="Text/html; charset = gb2312"%>
    2. 
  
  
  2. <Html>
    3. 
  
  
  3. <Head>
    4. 
  
  
  4. <Title>JSP Chinese Processing</Title>
    5. 
  
  
  5. <Meta Http-equiv="Content-Type" Content="Text/html; charset = gb2312">
    6. 
  
  
  6. </Head>
    7. 
  
  
  7. <Body>
    8. 
  
  
  8. <% = Request. getParameter ("name") %>
    9. 
  
  
  9. </Body>
    10. 
  
  
  10. </Html> 
    11.

If the English characters submitted by submit. jsp are correctly displayed, garbled characters will appear when you submit Chinese characters. Cause: by default, the browser uses the UTF-8 encoding method to send requests, while the UTF-8 and GB2312 encoding method to indicate the character is not the same, so there is an unrecognized character. Solution: requests are uniformly encoded using request. seCharacterEncoding ("gb2312") to display Chinese characters normally. The modified process. jsp code is as follows:

 
 
    
  
  
  1. <% @ PageContentType="Text/html; charset = gb2312"%>
    2. 
  
  
  2. <%
    3. 
  
  
  3. Request. seCharacterEncoding ("gb2312 ");
    4. 
  
  
  4. %>
    5. 
  
  
  5. <Html>
    6. 
  
  
  6. <Head>
    7. 
  
  
  7. <Title>JSP Chinese Processing</Title>
    8. 
  
  
  8. <Meta Http-equiv="Content-Type" Content="Text/html; charset = gb2312">
    9. 
  
  
  9. </Head>
    10. 
  
  
  10.  
    11. 
  
  
  11. <Body>
    12. 
  
  
  12. <% = Request. getParameter ("name") %>
    13. 
  
  
  13. </Body>
    14. 
  
  
  14. </Html> 
    15.

3. garbled database connection

As long as all Chinese characters are garbled, solution: Add useUnicode = true & characterEncoding = GBK to the Database URL.

4. garbled display of databases

In mysql4.1.0, Chinese garbled characters are displayed for the varchar and text types. Setting the varchar type as the binary Attribute can solve Chinese problems, for the text type, an encoding and conversion class must be used for processing. The implementation is as follows:

 
 
    
  
  
  1. public String iso2gb(String qs)   
    2. 
  
  
  2. {   
    3. 
  
  
  3. try{   
    4. 
  
  
  4. if (qs == null) return "NULL";   
    5. 
  
  
  5. else   
    6. 
  
  
  6. {   
    7. 
  
  
  7. return new String(qs.getBytes("iso-8859-1"),"gb2312");   
    8. 
  
  
  8. }   
    9. 
  
  
  9. }   
    10. 
  
  
  10. catch(Exception e){   
    11. 
  
  
  11. System.err.println("iso2gb error："+e.getMessage());   
    12. 
  
  
  12. }   
    13. 
  
  
  13. return "NULL";   
    14. 
  
  
  14. }   
    15. 
  
  
  15. public String gb2iso(String qs)   
    16. 
  
  
  16. {   
    17. 
  
  
  17. try   
    18. 
  
  
  18. {   
    19. 
  
  
  19. if (qs == null) return "NULL";   
    20. 
  
  
  20. else {   
    21. 
  
  
  21. return new String(qs.getBytes("gb2312"),"iso-8859-1"); }   
    22. 
  
  
  22. }   
    23. 
  
  
  23. catch(Exception e){ System.err.println("gb2iso error："+e.getMessage());}   
    24. 
  
  
  24. return "NULL";   
    25. 
  
  
  25. } 
    26.

The above is the problem that Chinese characters are garbled frequently on JSP pages during development, which may affect you as soon as possible, I am writing out the Chinese garbled characters I encountered during JSP development and the solutions for your reference.

  1. Notes for connecting JSP to ORACLE databases
  2. Configuration of tomcat SQL Server2000 Database Connection Pool in JSP
  3. Differences between Servlets and JSP
  4. Differences between JSP include commands and include actions
  5. Solutions to JSP output of excel documents and Chinese garbled characters

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
how to solve authentication problem in wifi connection how to get rid of stuttering problem how to solve packet loss league of legends how to solve cryptogram how to solve cryptoquip how to solve parse error how to solve dns issues
Related Article
The difference between fail-fast and fail-safe in Java

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More